// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_SSL_CLIENT_CERT_STORE_NSS_H_
#define NET_SSL_CLIENT_CERT_STORE_NSS_H_

#include <memory>

#include "base/callback.h"
#include "base/macros.h"
#include "net/base/net_export.h"
#include "net/ssl/client_cert_store.h"

typedef struct CERTCertListStr CERTCertList;

namespace crypto {
class CryptoModuleBlockingPasswordDelegate;
}

namespace net {
class HostPortPair;
class SSLCertRequestInfo;

class NET_EXPORT ClientCertStoreNSS : public ClientCertStore {
public:
    typedef base::Callback<crypto::CryptoModuleBlockingPasswordDelegate*(
        const HostPortPair& /* server */)>
        PasswordDelegateFactory;

    explicit ClientCertStoreNSS(
        const PasswordDelegateFactory& password_delegate_factory);
    ~ClientCertStoreNSS() override;

    // ClientCertStore:
    void GetClientCerts(const SSLCertRequestInfo& cert_request_info,
        CertificateList* selected_certs,
        const base::Closure& callback) override;

    // Examines the certificates in |certs| to find all certificates that match
    // the client certificate request in |request|, storing the matching
    // certificates in |filtered_certs|. Any previous content of |filtered_certs|
    // will be removed.
    // Must be called from a worker thread.
    static void FilterCertsOnWorkerThread(const CertificateList& certs,
        const SSLCertRequestInfo& request,
        CertificateList* filtered_certs);

    // Retrieves all client certificates that are stored by NSS and adds them to
    // |certs|. |password_delegate| is used to unlock slots if required.
    // Must be called from a worker thread.
    static void GetPlatformCertsOnWorkerThread(
        std::unique_ptr<crypto::CryptoModuleBlockingPasswordDelegate>
            password_delegate,
        net::CertificateList* certs);

private:
    void GetAndFilterCertsOnWorkerThread(
        std::unique_ptr<crypto::CryptoModuleBlockingPasswordDelegate>
            password_delegate,
        const SSLCertRequestInfo* request,
        CertificateList* selected_certs);

    // The factory for creating the delegate for requesting a password to a
    // PKCS#11 token. May be null.
    PasswordDelegateFactory password_delegate_factory_;

    DISALLOW_COPY_AND_ASSIGN(ClientCertStoreNSS);
};

} // namespace net

#endif // NET_SSL_CLIENT_CERT_STORE_NSS_H_
